lkml.org 
[lkml]   [2013]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: perf/ftrace lockup on 3.12-rc6 with trigger code

* Steven Rostedt <rostedt@goodmis.org> wrote:

> > Urgh, I had turned those on to try to debug something and forgot
> > to disable. I feel like I saw this problem before I had those
> > enabled so I guess I have to start from scratch fuzzing to see
> > if I can get a more generally reproducible trace.

Btw., even if various config options are enabled, we don't want the
kernel to lock up. So it might not be _the_ bug you are looking, but
it certainly looks like _a_ bug.

> Looks like something is incorrectly enabling function tracer
> within perf. Peter told me that there's some ref count bug that
> may use data after being freed on exit.
>
> I tried the program that you attached in you previous email, and
> was not able to hit the bug. Are you able to hit the bug with that
> code each time?

A full .config and a SHA1 of the tested tree would definitely be
nice!

Thanks,

Ingo


\
 
 \ /
  Last update: 2013-10-25 12:41    [W:0.076 / U:0.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site